71849526 has 64 divisors (see below), whose sum is σ = 174182400. Its totient is φ = 19300896.

The previous prime is 71849423. The next prime is 71849543. The reversal of 71849526 is 62594817.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 142591 + ... + 143093.

It is an arithmetic number, because the mean of its divisors is an integer number (2721600).

Almost surely, 2^71849526 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71849526, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87091200).

71849526 is an abundant number, since it is smaller than the sum of its proper divisors (102332874).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71849526 is a wasteful number, since it uses less digits than its factorization.

71849526 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 713.

The product of its digits is 120960, while the sum is 42.

The square root of 71849526 is about 8476.4099712083. The cubic root of 71849526 is about 415.7267490237.

The spelling of 71849526 in words is "seventy-one million, eight hundred forty-nine thousand, five hundred twenty-six".